Södermanland Runic Inscription 226 or Sö 226 is the Rundata catalog listing for a Viking Age memorial runestone located in Norra Stutby, which is about eight kilometers north of Sorunda, Stockholm County, Sweden, which was in the historic province of Södermanland.
The inscription on Sö 226 consists of runic text in the younger futhark that is carved on a serpent that circles along the outline of the stone, which is about 1.8 meters in height.
The horse, which is clearly a stallion as indicated by the phallus, is depicted with crossed legs to indicate powerlessness.
[1] The inscription on Sö 226 is classified as being carved in runestone style Fp, which is the classification for runic text bands with attached serpent or beast heads that are depicted as seen from above.
The runic text states that the stone was raised by four men named Bjôrn, Vébjôrn, Hrafni, and Ketilbjôrn in memory of their father Geirbjôrn.